you have 26 books.you return some books.then you take out 15 more books.now you have 27 books.how many books did you return? solve anyway​

Answer:

We accept the null hypothesis that the  breaking strength mean is less and equal to 1750 pounds and has not increased.

Step-by-step explanation:

The null and alternative hypotheses are stated as

H0:  u ≥ 1750   i.e the mean is less and equal to 1750

against the claim

Ha: u > 1750  ( one tailed test)  the mean is greater than 1750

Sample mean = x`= 1754

Population mean = u = 1750

Population deviation= σ = 65 pounds

Sample size= n = 100

Applying the Z test

z= x`- u / σ/ √n

z= 1754- 1750 / 65/ √100

z= 4/6.5

z= 0.6154

The significance level alpha = 0.1

The z - value at 0.1 for one tailed test is ± 1.28

The critical value is z > z∝.

so

0.6154 is < 1.28

We accept the null hypothesis that the  breaking strength mean is less and equal to 1750 pounds and has not increased.

Answer:

D because 9 + 5 = 14 and one variable by itself is equal to 1 so 14 + 1 = 15 add the variable, 15x

first find the gradient.

y2 - y1 / x2 - x1 = ((-1) - (-6)) / (1 - 2) = 5 / -1 = -5

Then find the equation of the line

y - y1 = m(x - x1)

y - (-2) = -5(x - 2)

y + 2 = -5x + 10

y = -5x + 10 - 2

y = -5x + 8

So the equation of the line is y = -5x + 8

Answer:

Step-by-step explanation:

Move the decimal place to the right until you get 3.81, that is 5 places. When you move a decimal place to the right, you have to subtract from the power.

[tex]3.81*10^-^5[/tex]

Answer:

3.81x10^-5

Step-by-step explanation:

Answer:

6x-3y

6(5)-3(-1)

30+3

The answer is 33

Step-by-step explanation:

Brainliest please :)

answer: 27

6×5-3×1

30-3=27

Answer:

12 oz

Step-by-step explanation:

Answer:

35%

Step-by-step explanation:

He made 7 out of 20 goals

7/20=0.35=35%

The probability as a percentage is  20%.

It is the chance of an event to occur from a total number of outcomes.

The formula for probability is given as:

Probability = Number of required events / Total number of outcomes.

Example:

The probability of getting a head in tossing a coin.

P(H) = 1/2

We have,

Out of the five Trials,

We can see that only one of them has Isaiah making both penalty kicks (TH HH HH TT).

Therefore, the probability that Isaiah makes both penalty kicks is 1/5 or 0.2.

Converting to a percentage,

0.2 x 100

= 20%

The probability is 20%.

Thus,

The probability as a percentage is  20%.

Learn more about probability here:

https://brainly.com/question/14099682

#SPJ3

Answer:

The answer is : x = 130 degrees

Answer:

B.

Step-by-step explanation:

That's like the only answer that makes sense.

Answer:

0.593, 0.9, 5.392, 5.932

Step-by-step explanation:

hope this helps^-^

Answer:

They would need to sell 32 calendars to EXCEED their goal.

Explanation:

8 x 32= 256, which is more than the $250 needed!

Step-by-step explanation:

The probability that the marble will be blue if he shakes the bag and when you puts his hand into the bag, to move it around and probably he'll get the blue marble.

Hopefully, it correct.... :)

Answer:

-18x^2+17x-9

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

Answer:

1. m<1 = 125°

2. m<4 = 125°

3. m<6 = 55°

4. m<8 = 125°

Step-by-step explanation:

1. 180 - 55 = 125

2. 180 - 55 = 125

3. m<2 = m<6 , m<6 = 55°

4. m<4 = m<8 , m<8 = 125°

Answer:

18.84

Step-by-step explanation:

To find the diameter of an question, multiple the radius by 2, since the radius always covers half of the circular clock. Then multiple 12 x pi = 18.84.

(pi = 3.14)

Answer:

y=3x-24

Step-by-step explanation:

Answer:

Not equivalent

Step-by-step explanation:

So basically when it says 2(3x-9) to simplify you need to remove the parentheses so the 2 multiplies both like this; 2×3x + 2×-9= 6x-18

So, 6x-9 is not equal to 6x-18

Answer:

It wouldnt be equivalent

for P, you have to do distributive property.

2×3x equals 6 and then you times 2×-9 which is -18. P= 6x-18. Therefore, it is not equivalent.

Answer:

It's 1

Step-by-step explanation:

The x axis is the "Hours of Sleep Each Night"

Look at 12 on the x coordinate

Look at y axis

You then see that A person who watches ____1____ hours of television would expect to get 12 hours of sleep.

Answer:

its 1 because i already had TTM with Mrs.Kajmowics and Mrs.Ortiz

Step-by-step explanation:

Answer:

The answer is y=40x because where the line hits a center point on you divide, for example in the picture the line is hitting (1.5,60) so you divide 60 by 1.5 and get 40 :)

Answer:

the minimum number of bits needed for quantization is 7

Step-by-step explanation:

Given the data in the question;

if quantization is Δv, then the maximum quantization Error is Δv/2

now if we split up the whole range  from -[tex]m_{p}[/tex] to [tex]m_{p}[/tex] evenly into L levels, so

Δv = [tex]2m_{p}[/tex] / L

Δv / 2 = [tex]m_{p}[/tex] / L

given that the error must be at most 1% of [tex]m_{p}[/tex],

1%[tex]m_{p}[/tex] = [tex]m_{p}[/tex] / L

1/100 × [tex]m_{p}[/tex] = [tex]m_{p}[/tex] / L

100 = L

now L must be a factor of 2 to be binary encoded,

so lets consider;

L = 128

2ⁿ = 128¹

2ⁿ = 2⁷

n = 7

Therefore, the minimum number of bits needed for quantization is 7

Answer:

x must be a negative i mean it has to how tfk do you get zero at an answer what kn the world

Answer:

18.25

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

7-7 is wrong

Answer:

your answer would be 4/7.

Step-by-step explanation:

divide the 12 by 3 giving 4 ... 4/7